Question for cel collecting friends

[pez]

I want to frame and hang up some of my cels - is it true that frames with special coating on the glass is essential (because of colour deterioration due to sunlight) or is it just the preferred option for those who can afford it?

How much would a frame like that cost for a normal-sized cel? I wonder if I can find that sort of thing easily here... maybe buy online, but I suppose it's not very shipping-friendly, is it. =/

Advice and past experience please please please?